WYANET STP - Wyanet, Illinois Wastewater Treatment Plant

WYANET STP is a municipal wastewater treatment plant located in Wyanet, Bureau County, Illinois. It serves a population of approximately 1,028 residents and operates as a secondary treatment facility, which is standard for small communities in the United States under the Clean Water Act. The plant has a designed capacity of 757.08 cubic meters per day and currently treats an average daily flow of 416.40 cubic meters, indicating it operates well below its capacity. As a US facility, it is regulated under the National Pollutant Discharge Elimination System (NPDES) permit program, which sets effluent limits to protect water quality. The treated effluent is discharged into the Hennepin Canal, a historic waterway that connects to the Illinois River. The Illinois River flows southwest to join the Mississippi River, a major waterway that drains into the Gulf of Mexico. The plant's discharge contributes to the overall water quality of this important river system, which supports diverse aquatic life and serves as a migratory corridor for fish and birds.

The plant discharges into the Hennepin Canal, which connects to the Illinois River, a tributary of the Mississippi River. The Mississippi River basin is one of the largest in North America, supporting extensive aquatic ecosystems and providing habitat for numerous fish species, including endangered species like the pallid sturgeon. The Illinois River itself is a critical migratory route for waterfowl and supports a diverse fish community. The plant's secondary treatment helps reduce organic pollutants and suspended solids, protecting downstream water quality.